Siemens SIMATIC S7-400H - Assignment of the Status Bytes

Using I/O on the S7-400H
7-34
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Status of the passivation of individual module pairs determined by
MODUL_STATUS_WORD
MODUL_STATUS_WORD is in the instance DB of FB 453 “RED_STATUS”. The
two status bytes provide information about the status of individual module pairs.
MODUL_STATUS_WORD is an output parameter of FB 453 and can be
connected accordingly.
Table 7-5 Assignment of the status bytes
Bit
Meaning
Status byte 1
0 0 = Passivation of module_L triggered by OB 82
1 = No passivation of module_L triggered by OB 82
1 0 = Passivation of module_H triggered by OB 82
1 = No passivation of module_H triggered by OB 82
2 0 = Overflow or underflow (for analog input modules)
1 = No overflow or underflow
3 0 = Channel information is available
1 = Channel information is not available
4 0 = Discrepancy time expired (for input modules)
1 = Discrepancy time not expired
5 0 = Module pair is discrepant (for input modules)
1 = Module pair is not discrepant
6 0 = Module_L passivated
1 = Module_L depassivated
7 0 = Module_H passivated
1 = Module_H depassivated
Status byte 2
0 Standby
1 Standby
2 0 = No enable for depassivation of module_L after outgoing event of OB 85
1 = Enable for depassivation of module_L after outgoing event of OB 85
3 0 = No enable for depassivation of module_H after outgoing event of OB 85
1 = Enable for depassivation of module_H after outgoing event of OB 85
4 0 = No enable for depassivation of module_L after outgoing event of OB 82
1 = Enable for depassivation of module_L after outgoing event of OB 82
5 0 = No enable for depassivation of module_H after outgoing event of OB 82
1 = Enable for depassivation of module_H after outgoing event of OB 82
6 0 = Passivation of module_L triggered by OB 85
1 = No passivation of module_L triggered by OB 85
7 0 = Passivation of module_H triggered by OB 85
1 = No passivation of module_H triggered by OB 85